Cathepsin D (CatD) is an aspartic acid protease involved in the immune response of macrophages to bacterial infection, and the development of pH insensitive CatD probes is vital in order to detect its activity across multiple cellular components. Here, the authors develop a water soluble and pH insensitive FRET-based fluorescent probe for the sensitive detection of CatD.
- Maria Rodriguez-Rios
- Brian J. McHugh
- Mark Bradley